Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for obtaining display calibration data and a display gamma value for an electronic device having a display using a calibration system, wherein the display gamma value is a parameter of a gamma model that relates display control settings to display light output levels, the method comprising: with the calibration system, ascertaining the display gamma value using display white point calibration information, wherein ascertaining the display gamma value comprises ascertaining the display gamma value based on a sub-range of digital display control values to be used in performing display white point calibration operations and wherein the sub-range of digital display control values corresponds to a sub-range of digital display control values within a larger range of available digital display control values; and with the calibration system, performing the display white point calibration operations using the ascertained display gamma value.
A method for calibrating an electronic device display using a calibration system to obtain display calibration data and a display gamma value. The gamma value is a parameter within a gamma model, linking display control settings (digital display control values) to display light output. The method involves: Determining the display gamma value using display white point calibration information, specifically using a limited range of digital control values (a sub-range within the total available range); and using this determined gamma value to perform the display white point calibration.
2. The method defined in claim 1 wherein ascertaining the gamma value using the display white point calibration information comprises: obtaining the sub-range of digital display control values to be used in performing the display white point calibration operations; and gathering display intensity performance data using a set of digital display control values that are within the obtained sub-range of digital display control values to be used in performing the display white point calibration operations.
The method for calibrating an electronic device display as described above includes determining the gamma value by: Obtaining the specific sub-range of digital display control values to be used for white point calibration; and collecting display intensity performance data using a set of digital display control values that fall within this pre-defined sub-range used for white point calibration.
3. The method defined in claim 2 wherein ascertaining the display gamma value using the display white point calibration information further comprises: ascertaining the display gamma value using the gathered display intensity performance data.
The method for calibrating an electronic device display as described above further determines the gamma value by: Using the display intensity performance data (gathered from the defined sub-range) to ascertain the precise display gamma value.
4. The method defined in claim 3 wherein ascertaining the display gamma value using the display intensity performance data comprises: identifying an optimal gamma parameter for the gamma model that results in a match between the gamma model and the gathered display intensity performance data in the obtained sub-range.
The method for calibrating an electronic device display as described above determines the gamma value using the display intensity performance data by: Identifying the optimal gamma parameter for the gamma model. This optimal parameter is the one that best matches the gamma model's output to the measured display intensity performance data, specifically within the defined sub-range of digital display control values.
5. The method defined in claim 4 wherein identifying the optimal gamma parameter for the gamma model comprises identifying the optimal gamma parameter for a gain-offset-gamma model.
The method for calibrating an electronic device display as described above finds the optimal gamma parameter for a gain-offset-gamma model, a specific type of gamma model that includes gain and offset adjustments in addition to the gamma parameter.
6. The method defined in claim 4 wherein identifying the optimal gamma parameter for the gamma model comprises identifying the optimal gamma parameter for a gain-offset-gamma-offset model.
The method for calibrating an electronic device display as described above finds the optimal gamma parameter for a gain-offset-gamma-offset model, a more complex gamma model including a gain, a gamma, and two offset adjustments.
7. The method defined in claim 4 wherein identifying the optimal gamma parameter for the gamma model comprises identifying the optimal gamma parameter for a gain-gamma-offset model.
The method for calibrating an electronic device display as described above finds the optimal gamma parameter for a gain-gamma-offset model, another variation of the gamma model incorporating a gain, a gamma, and one offset adjustment.
8. The method defined in claim 2 wherein gathering the display intensity performance data using the set of digital display control values that are within the obtained sub-range of digital display control values to be used in performing the display white point calibration operations comprises: operating the display using the set of digital display control values that are within the sub-range of digital display control values; and gathering display intensity performance data while operating the display using the set of digital display control values.
In the method for calibrating an electronic device display described above, gathering display intensity performance data using digital control values within the sub-range involves: Activating the display using the set of digital display control values from the sub-range; and simultaneously measuring and recording the display's intensity performance while it is driven by these control values.
9. The method defined in claim 8 wherein performing the display white point calibration operations using the ascertained gamma value comprises: gathering display color performance data while operating the display using an additional set of digital display control values that are within the sub-range of digital display control values.
The method for calibrating an electronic device display described above, using the ascertained gamma value to perform white point calibration, further includes: Gathering display color performance data. This data is collected while the display is operating with a separate, additional set of digital display control values also within the defined sub-range of control values.
10. The method defined in claim 9 , further comprising: determining whether the gathered display color performance data is within a predetermined range of target color performance data.
The method for calibrating an electronic device display as described above further comprises: Checking if the collected display color performance data falls within a predetermined acceptable range of target color performance data. This establishes if the calibration is within tolerance.
11. The method defined in claim 10 , further comprising: in response to determining that the gathered display color performance data is within the predetermined range of the target color performance data, terminating display calibration operations.
The method for calibrating an electronic device display as described above includes: If the display color performance data is within the target range, stopping the display calibration process, indicating successful calibration.
12. The method defined in claim 10 , further comprising: in response to determining that the gathered display color performance data is outside the predetermined range of the target color performance data, generating the display calibration data using the gathered display color performance data and the ascertained display gamma value; and providing the display calibration data to the electronic device.
The method for calibrating an electronic device display as described above, includes: If the collected display color performance data is outside the target range, generating the final display calibration data using both the collected display color performance data and the previously determined display gamma value; and then sending this calculated calibration data to the electronic device.
13. The method defined in claim 1 , further comprising: prior to performing the display white point calibration operations using the ascertained display gamma value, providing initial display calibration data to the electronic device, wherein performing the display white point calibration operations using the ascertained display gamma value comprises: operating the display using the initial display calibration data, and gathering display color performance data while operating the display using the initial display calibration data.
The method for calibrating an electronic device display as described above also includes: Before performing white point calibration with the ascertained gamma, sending initial display calibration data to the device. The white point calibration then involves operating the display using this initial data, and collecting display color performance data while operating with the initial calibration settings.
14. An electronic device, comprising: a display having display control circuitry configured to generate display signals for the display and configured to store display color performance calibration data, wherein the display color performance calibration data is based on information gathered while operating the display using a sub-range of digital display control values and wherein the sub-range of digital display control values corresponds to a sub-range of digital display control values within a larger range of available digital display control values; and storage and processing circuitry configured to perform startup operations for the device and configured to provide display data to the display.
An electronic device includes: A display, its control circuitry (generating display signals and storing display color calibration data derived from operating the display within a specific limited sub-range of digital control values, out of the broader range available); and storage/processing circuitry for booting up the device and feeding display data to the display.
15. The electronic device defined in claim 14 , wherein the storage and processing circuitry is configured to provide startup information to the display while performing the startup operations for the device.
The electronic device as described above has storage and processing circuitry which also: Provides startup information to the display during the device's boot sequence.
16. The electronic device defined in claim 15 wherein the display is configured to display the startup information on the display using the display color performance calibration data that is stored in the display control circuitry.
The electronic device as described above, its display is configured to: Show the startup information using the display color calibration data already stored in its control circuitry. This ensures a calibrated display even during startup.
17. The electronic device defined in claim 16 wherein the display comprises a liquid crystal display.
The electronic device as described above, the display is a liquid crystal display (LCD).
18. A method of operating an electronic device, having a display with display control circuitry, the method comprising: powering on the electronic device; performing boot operations for the electronic device; and while performing boot operations for the electronic device, operating the display in a color calibrated mode using display white point calibration data that is stored in the display control circuitry, wherein the display white point calibration data is based on information gathered while operating the display using a sub-range of digital display control values and wherein the sub-range of digital display control values corresponds to a sub-range of digital display control values within a larger range of available digital display control values.
A method for operating an electronic device that has a display with its own display control circuitry, comprising: Turning on the device; Booting up the device; and During boot-up, operating the display in a color-calibrated mode. This calibration uses white point calibration data which is pre-stored in the display's control circuitry and based on measurements taken while operating the display in a restricted sub-range of digital display control values, rather than the full range.
19. The method defined in claim 18 wherein operating the display in the color calibrated mode using the display white point calibration data that is stored in the display control circuitry comprises: providing display control signals from additional circuitry in the electronic device to the display.
The method for operating an electronic device as described above, operating the display in the color calibrated mode involves: Sending display control signals to the display from other circuitry within the device.
20. The method defined in claim 19 wherein operating the display in the color calibrated mode using the display white point calibration data that is stored in the display control circuitry further comprises: adjusting the provided display control signals using the display white point calibration data that is stored in the display control circuitry.
The method for operating an electronic device as described above, operating the display in the color calibrated mode further includes: Adjusting the display control signals, using the white point calibration data stored inside the display control circuitry to modify the signals.
21. The method defined in claim 20 wherein operating the display in the color calibrated mode using the display white point calibration data that is stored in the display control circuitry further comprises: operating display pixels in the display using the adjusted display control signals.
The method for operating an electronic device as described above, operating the display in the color calibrated mode includes: Controlling the individual display pixels, utilizing the adjusted display control signals to set the color and intensity of each pixel.
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November 18, 2014
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